Ulvac CRYO-U12H Instruction Manual Download

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CRYO-U

Cryopump Instruction Manual

ULVAC CRYOGENICS INCORPORATED

E-3

The ideal refrigeration ability “Q

ideal

” is as follows when indicating the period of one

cycle as “t” minutes:

ideal =

W / t

In the actual refrigerator, the structure with two stages is adopted in order to gain cryogenic

temperature of 15K or less as shown in Figure E-3. In order to simplify structure, the

regenerator is built into the inside of the displacer, and it is unifying. Moreover, since

difference pressure is not applied to seals on the 1st stage and 2nd stage, the structure

where the load to the seal is light has been adopted. Therefore, a long-lived, high reliability

is acquired.

Summary of Contents for CRYO-U12H

Page 1: ...ional export control regimes Also when applying a refrigerator system to a cryocooler for optical sensors the cryocooler falls under row 10 2 of appended table 1 of Japan s Export Trade Control Order...

Page 2: ......

Page 3: ...where our product is used The personnel are also required to have specialized knowledge skills and qualification on the electricity the machinery the cargo handling and the vacuum Especially the perso...

Page 4: ...wns resulting from using the product outside the specified specifications of the product Breakdowns due to contamination or corrosion caused by user s use conditions Breakdowns due to natural disaster...

Page 5: ...splay Serial No Option Part Model Optional Part Serial No 4 Notes for repair and maintenance requests We may decline your request for the repair or the maintenance of our products if you refuse to giv...

Page 6: ...fer this instruction manual or any of its parts to a third person without written permission from ULVAC CRYOGENICS 2 Information in this document might be revised without a previous notice for the spe...

Page 7: ...ould result in severe injury or loss of life A caution describes safety hazards or unsafe practices which could result in personal injury or equipment damage Toxic gas or chemicals used There is a ris...

Page 8: ...F 6 ULVAC CRYOGENICS INCORPORATED This page intentionally left blank...

Page 9: ...Equipments Required 4 1 4 2 Mounting the Cryopump to the Vacuum System 4 3 4 3 Connecting Roughing Pump 4 5 4 4 Connecting Purge Gas Line 4 5 4 5 Connecting Exhaust Pipe 4 6 4 6 Connecting Cooling Wa...

Page 10: ...nd Storage 7 1 Disconnecting Flexible Hose 7 1 7 2 Storage 7 2 SECTION 8 Maintenance 8 1 Scheduled and Unscheduled Maintenance 8 1 8 2 Consumables 8 3 8 3 Cleaning the Cryopump 8 4 8 4 Charging Helium...

Page 11: ...Adapter 8 9 8 4 Cryopump Decontamination Procedures 1 8 10 8 5 Cryopump Decontamination Procedures 2 8 12 8 6 Connecting Flexible Hoses 8 13 D 1 Vapor Pressure of Various Kinds of Gas D 2 E 1 Principl...

Page 12: ...Table of Contents ULVAC CRYOGENICS INCORPORATED A 1 Cryopump Fault Diagnosis A 2 A 2 Operating Log A 7 F 1 Dew Point Temperature F 2...

Page 13: ...ing of the pressure relief valve is set to 10 20kPaG and the valve opens when the internal pressure exceeds this Therefore please do not close the outlet of the pressure relief valve not strengthen th...

Page 14: ...e or the substrate dissociates into hydrogen and oxygen in plasma Those gases may be also discharged in large amounts from some evaporants or sputtering targets Oxygen is one of the gases which increa...

Page 15: ...H6 2 NH3 CH4 C2H6 C3H8 C H 2 016 28 01 34 08 32 14 77 94 34 00 27 67 17 03 16 04 30 07 44 10 28 05 0 070 0 970 1 190 1 107 2 692 1 146 0 955 0 590 0 555 1 040 1 550 0 978 20 3 81 7 213 6 161 2 210 7 1...

Page 16: ...the inner kits might occur depending on the kind or amount of the process gases and note that when the part s needs to be exchanged due to corrosion part replacement is considered as fare paying serv...

Page 17: ...xture of oxygen and flammable gas into the cryopump In particular the mixture of oxygen and hydrogen which has a broad range of combustion detonation is extremely dangerous The mixes gas with hydrogen...

Page 18: ...or combustion enhancing gas When regenerating the cryopump after pumping flammable explosive or combustion enhancing gas those gases must be safely vaporized again and exhausted Following safety measu...

Page 19: ...lease fix up the purge flow rate the dilution flow rate and regeneration time period which related with the pumping capacity of flammable gas and take measures required before starting the cryopump op...

Page 20: ...p the cryopump without inspecting the state of the pump just after power failure As mentioned in the above reduce the concentration of hazardous gases in the pump and exhaust line by adding inert gas...

Page 21: ...may rupture at weak portion If the cryopump is used to pump corrosive gases periodic pressure proof test is recommended ULVAC CRYOGENICS INC executes the pressure proof test of the cylinder by increa...

Page 22: ...to R50 series the required torque is 6 9N m 70kgf cm On the other hand as for cylinder bolts M6 6pcs used in the refrigerators of R80 series it is 11 6N m 118kgf cm 3 Fill the refrigerator with the h...

Page 23: ...ssure gas might cause another trouble that the system would stop by hitting the high pressure switch in the compressor unit Do not charge the refrigerator with helium gas exceeding the regulated value...

Page 24: ...This page intentionally left blank S 12 ULVAC CRYOGENICS INCORPORATED...

Page 25: ...ordinance etc When it seems that the cryopump or refrigerator has been used to evacuate a toxic or dangerous material you must contact a safety supervisor before discarding and discard it after removi...

Page 26: ...IW 2 ULVAC CRYOGENICS INCORPORATED This page intentionally left blank...

Page 27: ...ogenic temperature surface Because the cryopump has a big pumping speed in the large pressure range to almost all gas it can make a pure high ultra high vacuum easily The system has adopted a two stag...

Page 28: ...kg 1 40 42 40 Refrigerator unit Cold head R20 R20R RM20 Compressor unit C30V C30VR Compressor unit for multi operation 2 C30MV C30MVR Helium gas supply and return connectors 1 2 self sealing couplings...

Page 29: ...gas Depending on the ambient temperature and humidity dew condensation may form on an operating cryopump as the surface of the pump case becomes colder than the dew point Refer to Appendix F Dew Poin...

Page 30: ...accessory flange may be changed according to your request Note UVG flange is equivalent to VG of JIS standard Unit mm CRYO U 12H CRYO U 12HSP UVG 300 10B ANSI ISO K DN320 ISO F DN320 236 236 236 236 5...

Page 31: ...LVAC CRYOGENICS INCORPORATED 1 5 Unit mm CRYO U 12HL UVG 300 10B ANSI ISO K DN320 ISO F DN320 266 266 266 266 712 715 697 724 4 400 406 370 425 304 8 304 8 304 8 304 8 Figure 1 3 External Drawing of C...

Page 32: ...1 4 Major Components Inner kits 80K shield Pump case Pressure relief valve 80K baffle Refrigerator unit Helium gas return connector 15K cry panel 1 1s age Helium gas supply connector o t st Condensat...

Page 33: ...ces for cryopump 3 Instruction manual of compressor unit Instruction manual of optional devices for control system 1 each 1 Input Power Cable Refrigerator Power Cable Remote Connector Spanner kit Flex...

Page 34: ...il the time of installation 3 Notice to Hydrogen Vapor Pressure Gauge users Make sure that the charge pressure shows 0 35 0 02 MPaG at room temperature The pressure depends on the room temperature If...

Page 35: ...the vacuum system Connect the roughing system regeneration gas purge unit and exhaust duct line to the cryopump Connect the cooling water piping to the compressor unit Connect the cryopump to the comp...

Page 36: ...lowings a Filling pressure in the compressor unit b Temperature and flow rate of cooling water c Flow rates of purge gas and dilution gas if supply lines for those gases are required for regeneration...

Page 37: ...opump to 1Pa or less is recommended Roughing valve Used to isolate the cryopump from the roughing pump during cryopump operation Vacuum gauge for rough pumping Used to measure the pressure during roug...

Page 38: ...thermometer according to the model of your cryopump PiG1 CRYOPUMP PIRANI GAUGE IG1 CRYOPUMP IONIZATION GAUGE PiG2 VACUUM CHAMBER PIRANI GAUGE IG2 VACUUM CHAMBER IONIZATION GAUGE PiG3 ROUGHING PUMP PI...

Page 39: ...n the mounting position see Table 1 1 in Section 1 2 If the chamber has any heat source install cryopump not to face directly to the heat source Refer to Figure 4 2 for the recommended mounting locati...

Page 40: ...Installation 4 4 ULVAC CRYOGENICS INCORPORATED 360 68 250 R250 This shows the minimal maintenance space required for a refrigerator unit Figure 4 3 Maintenance Space...

Page 41: ...cryopump Please design and construct the flow pathway of the purge gas carefully to ensure the required flow rate In case of using our optional Regeneration Gas Purge PR Unit 2 3 not applicable for a...

Page 42: ...Connecting Exhaust Pipe Toxic corrosive flammable or explosive gases has to be vented to a safe place through exhaust pipe Be sure to connect an exhaust pipe to the cryopump pressure relief valve als...

Page 43: ...Read the handling notes in appendix B about the connection of the flexible hoses When connecting flexible hoses always use two single open end spanners with width across flat 26mm and 30mm Do not for...

Page 44: ...ting Remote Wiring For remote operation a remote wiring is necessary Please read the compressor unit instruction manual for the electric machine design specification concerning the remote operation 4...

Page 45: ...coupling by hand Tighten the self sealing coupling using two wrenches until the fittings are firmly sealed When using torque wrench the recommended torque value is 20N m Figure 4 5 Connecting Flexible...

Page 46: ...Installation 4 10 ULVAC CRYOGENICS INCORPORATED This page intentionally left blank...

Page 47: ...roughing valves RV1 RV2 are closed The helium gas pressure gauge on the compressor unit shows the specified value It is recommended to carry out daily check and keep an operating log to notice the fi...

Page 48: ...the stable state the rubbed sound becomes small Oppositely the inhalation sound and the exhalation sound of helium gas like choo choo become loud When the 15K cryopanel is cooled to 20K or less and t...

Page 49: ...rmocouple electromotive force If it continues running a cryopump at the higher vacuum pressure for a long time the cryopump case may dew It will surely cause short circuit if an electrical device is p...

Page 50: ...ircuit if an elec cryopump Be careful about the operating condition of equipment and surrounding safety 5 6 Crossover Crossover pressure is pressure rough essure of the vacuum chamber immediately befo...

Page 51: ...d the quantity of the gas condensed in the cryopump Refer to Table 5 2 able 5 2 Maximum Quantity of Sucked Gas Processable by Cryopump odel processable Pa L it quantity for the temperature of 20K CRYO...

Page 52: ...fter the shutdown of cryopump proceed with warm up and rough pumping which are parts of regeneration process in order to maintain the cryopump in a clean vacuum Refer to Clause 3 Proceed with regenera...

Page 53: ...he cryopump in a clean vacuum Refer to Clause 3 Proceed with regeneration right after the cryopump stops in the Safety section Do not block the pressure relief valve Be careful of a burn when using a...

Page 54: ...shown in Table 1 1 When the cryopump can not maintain the original performance Note For and above temperature indicator s is are required 6 3 Warm up Method There are three methods for warm up Unassi...

Page 55: ...ON OFF by its thermostat setting Please refer to the instruction manual of each heater that you use for more information When using an inner heater make sure to control the temperature with our CRYO...

Page 56: ...p If the pressure buildup value stayed less than 6 5Pa for five minutes the check is completed If it increased 6 5Pa or more in five minutes repeat the rough pumping procedures to 40 Pa and the pressu...

Page 57: ...ed refer to Paragraph 6 Regeneration after pumping flammable explosive or combustion enhancing gas in the Safety section The amount of gas captured in the cryopump depends on your process Set up the t...

Page 58: ...e the regeneration process is completed When the main valve is not a reverse pressure compatible valve start regeneration of the cryopump after returning the vacuum chamber to atmospheric pressure so...

Page 59: ...gas is amassed by the cryopump the inner pressure of the cryopump may become higher than atmospheric pressure during warm up process in the regeneration because most captured gas evaporates for a sho...

Page 60: ...Regeneration 6 8 ULVAC CRYOGENICS INCORPORATED This page intentioanlly left blank...

Page 61: ...een w om temperature disconnect the flexible hoses armed up to ro If removing the flexible hoses before the refrigerator reaches room temperature helium gas shut up into the refrigerator increases pre...

Page 62: ...sorb moisture in the atmosphere and result in performance degradation Loosen the nut with a spanner Hold with a spanner CAUTION If the cryopump is stored in the state attached to your vacuum system th...

Page 63: ...ing base to the floor not to move around 6 Cryopumps should be kept away from direct sun light high temperature humidity dust vibration radiation wind and rain Shipment of the cryopump Put all covers...

Page 64: ...Disconnection and Storage 7 4 ULVAC CRYOGENICS INCORPORATED This page intentionally left blank...

Page 65: ...r Replacement of the compressor adsorber Unscheduled Maintenance Cleaning the cryopump Adding helium gas Decontaminating the helium gas line Calibration of Cryometer Following items and helium gas are...

Page 66: ...ryometer MBS C Cryometer At fault Use the paid calibration service Refrigerator unit R20R R20 RM20 S S S S Seal kit replacement Driver assembly Replacement Motor bearing replacement Cylinder bolt repl...

Page 67: ...ISO K DN320 ISO F DN320 Mounting flange O ring V325 O ring AS568 278 O ring NW320 Accessory flange C type O ring AS568 020 Refrigerator flange O ring G115 Metal O ring Note3 Pressure relief valve O r...

Page 68: ...c inspect the 80K shield 80K baffle and 15K cryopanel at the same time performance of commended to Cleaning of Inner kit Especially the 80K baffle tends to get contaminated most Perform the 80K baffle...

Page 69: ...in Table 8 1 Heaters for regeneration both sheathed type and cartridge type have a possibility of deterioration of nonconductivity with age Be sure to install a ground fault circuit interrupter and c...

Page 70: ...e helium bottle and contaminates helium gas Remove the front panel of the compressor unit Connect the helium charging hose as follows Connect the charging hose to the regulator Loosely connect the cha...

Page 71: ...the front panel If helium gas has been charged more than the prescribed pressure of 1 9MPaG or more the pressure relief valve on the refrigerator may be going to work Therefore charge helium gas slowl...

Page 72: ...ement Turn on the cryopump system refrigerator unit and keep the running for three to four hours NOTE Since all impurities in the helium gas are condensed and solidified within the refrigerator during...

Page 73: ...m cryostatic temperature gradually and the inner pressure rises at the same time The unit has a pressure relief valve which opens at the inner pressure of 1 9MpaG and more If once the pressure relief...

Page 74: ...horten the warm up time Before proceeding to next make sure that the 15K cryopanel has reached room temperature Connect the helium bottle and the regulator Replace the air remained between the helium...

Page 75: ...rypump is 0 01MPaG CAUTION Make sure to open the valve slowly when exhausting the gas beyond the atmospheric pressure in order to maintain the pressure of the pump head below an allowable value If you...

Page 76: ...refrigerator unit and the flexible hose up to the static charge pressure of the compressor unit Remove both SUPPLY and RETURN flexible hoses from the charging adopter Make sure that the flat rubber g...

Page 77: ...es the specified pressure indicated on the front panel If not charge helium gas through the charging valve of the compressor unit again or adjust the pressure by discharging the helium gas Restart the...

Page 78: ...Maintenance 8 14 ULVAC CRYOGENICS INCORPORATED This page intentionally left blank...

Page 79: ...wn of the refrigerator the rise in temperature or pressure will rapidly occur in minutes or hours 2 80K shield and 15K cryopanel contaminated Thermal load increases Temperature rises Pressure rises In...

Page 80: ...lean the inner kit or replace it with a new one 4 There is a leakage in the cryopump or the vacuum system Find and stop the leak Neither the compressor unit nor the cryopump start Consult the instruct...

Page 81: ...asured values with S N of the refrigerator unit The cryopump fails to cool down to 20K or lower at the time of startup 1 Helium Supply Return line incorrectly connected Self sealing coupling is not fu...

Page 82: ...Purge helium with dry nitrogen gas to reduce the partial pressure of helium 4 Leakage Air to vacuum leakage at attaching parts or ports on the cryopump Helium leakage caused by the slack of helium ga...

Page 83: ...he nearest CS center 7 Performance of 15K cryopanel is deteriorated Excessive water vapor adsorption Since the roughing valve was accidentally opened in the cold condition of the cryopump the panel ha...

Page 84: ...confirm that the pressure buildup speed from 40Pa is 1 3Pa min or less 2 Leakage in vacuum system Detect and stop the leakage Refrigerator drive motor is making irregular or intermittent motion 1 Hel...

Page 85: ...SOR S N REFRIGERATOR S N Measuring condition Compressor unit Cryopump Remarks Temperature Pressure Date Time Measurer Room temp Humidity ETM High pressure helium gas MPaG Current Cooling water flow ra...

Page 86: ...Troubleshooting A 8 ULVAC CRYOGENICS INCORPORATED This page intentionally left blank...

Page 87: ...ecting 20N m It is fastened and crowded until self seal coupling stops turning Connection 1 2B self sealing coupling Precaution in Handling When carrying the flexible hose hold the braid support of th...

Page 88: ...Flexible Hose B 2 ULVAC CRYOGENICS INCORPORATED This page intentionally left blank...

Page 89: ...Manual MA0C001E 2010 01 ULVAC CRYOGENICS INCORPORATED C 1 Appendix C CONVERSION OF THERMOMETER READINGS K CA Thermocouple Electromotive Force Temperature K E M F mV 300 250 200 150 100 50 1 0 1 2 3 4...

Page 90: ...dicated value of the hydrogen vapor pressure gauge changes depending on the atmospheric pressure of the altitude A true temperature can be read by applying the vapor pressure calculated by the followi...

Page 91: ...lled on the cryo surface Since the cryopump evacuates gas as stated above by condensing or absorbing the gas on the cryo surface evacuated gas is accumulated on the cryo surface In the case of condens...

Page 92: ...INCORPORATED Temperature K R E Honing and H O Hook RCA Review Sept 1960 Figure D 1 Vapor Pressure of Various Kinds of Gas 10 11 0 20 50 100 130 150 200 Vapor Pressure Pa He H2 Ne N2 CO O2 Ar CH4 CO2 C...

Page 93: ...igh pressure helium gas in the expansion chamber is exhaled toward the low pressure part of the compressor unit with the differential pressure During this process the pressure and temperature of the h...

Page 94: ...ure valve is closed and the high pressure valve is opened a The compressed helium is introduced into the warm end and the cold end the expansion chamber of the cylinder Pressure inside the cylinder in...

Page 95: ...ure with two stages is adopted in order to gain cryogenic temperature of 15K or less as shown in Figure E 3 In order to simplify structure the regenerator is built into the inside of the displacer and...

Page 96: ...re E 3 Two stage Refrigerator Compressor Low pressure High pressure Valve close Room temp a b Open Regenerator Cylinder Displacer Expansion chamber low temp 1 cycle c d High pressure Low pressure Seal...

Page 97: ...Table on the next page 2 Residual moisture inside is frozen due to insufficient regeneration Perform the regeneration work again confirm that the cryopump passes the pressure buildup check and start c...

Page 98: ...7 3 3 6 5 9 2 11 5 13 5 14 3 15 3 18 5 3 0 2 4 2 7 4 10 1 12 4 14 5 15 2 16 3 19 4 5 1 0 5 1 8 4 11 1 13 4 15 5 16 3 17 3 20 3 6 1 9 6 0 9 3 12 0 14 4 16 4 17 2 18 3 21 2 8 2 8 6 9 10 2 12 9 15 3 17...

Page 99: ...397 0112 Fax 81 6 6397 0126 Inquiries about cryostats or LN2 generators Kyoto Factory 140 1 Megawa Makishima cho Uji kyoto 611 0041 Japan Tel 81 774 28 5595 Fax 81 774 20 2201 ULVAC CRYOGENICS KOREA I...

Page 100: ...CS 2 ULVAC CRYOGENICS INCORPORATED This page intentionally left blank...

Page 101: ...al and parts SERVICE NETWORK has been revised RM refrigerator has been added Full fledged revision P 8 Item names and item codes of equipments for maintenance have been changed Cover Export control po...

Page 102: ...ts and intervals R10 R10R RM10 R50 R50R and RM50 refrigerator unit have been removed P 8 3 Table 8 3 Consumables has been revised Table A 1 CRYOPUMP Fault Diagnosis has been revised Yokkaichi CS conta...

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